Resilient wheel



W E. BABBITT. RESILIENT WHEEL. APPLICATION FILED JAN. 7, 1919.

1,392,262, PatentedSept. 27, 192 1.

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w. EDMANIDS BABBITT, or PORTSMOUTH, New HAMPSHIRE, ASSIGNOR or Two-Harris TO RA'LIH W. FOSTER, 0F BOSTON, MASSACHUSETTS.

' RESILIENT WHEEL.

Specification of Letters Patent.

Patented Sept. 27, 1921.

To all. whom it may concern: 7

Be it known that I, W. EDMANDS BABBITT,

a citizen of .the United States, residing at Portsmouth, in the county of Rockingham and State of New Hampshire, ha-ve invented certain new and useful :Improvements in Resilient Wheels, of which the following is a specification. V

This invention relates to cushioned wheels for vehicles and its object is to, provide a wheel withlcushioning means so constructed and disposed that-while most effective and reliable thismeans shall be protected from punctures and other injuries.

The invention is illustratedby the accompanying-drawings in which: 7

Figure 1 is a side elevation of the wheel with portions of the tube cut away and without the rim; and

Fig. 2 isa central horizontal section on line 2-2 Fig. 1.

As illustrated, the wheel comprises three concentric disks: the outer disk 1; the middle disk 2, to which the rim of the wheel (not shown) is attached; and the inner disk 3; the middle disk being confined between the outer and inner disks in sliding engagement therewith.

The outer disk 1 is furnished with the extended tubular hub 1 adapted to engage rotatably or fixedly the axle I; said disk 1 being furnished also with a peripheral wall consisting of equally spaced sections 1 projected perpendicularly therefrom.

The middle disk 2 has a central opening 2 and a series of equally spaced peripheral openings 2 for the passage therethrough respectively of the hub 1 and sections 1 of the wall of the outer disk 1.

The inner disk 3 is furnished with the tubular hub 3 and with the peripheral wall 3 projected perpendicularly therefrom and fits tightly within the walls of disk 1, being held in place by the ring 1 fixed on the tubular hub 1 said inner disk 3 being furnished also with a series of openings 3 for the purpose hereinafter explained.

The spiral wall 5 rises perpendicularly from a plane parallel to and just above that of the inner face of the inner disk 3, so as to clear said disk, and is afiixed to middle disk 2 by feet or lugs 5 which extend through the openings 3 in disk 3.

When the parts above described are assembled, the outer disk 1 and the inner disk 3 constitute a single disk, apertured, slotted and walled as described, and confining between them in sliding engagement therewith the middle disk 2.

The spiral wall 5 is of such length andso plotted and attached to the middle disk 2 that its inner and outer end portions are preferably left free, and it forms with the tubular hub 3 and the peripheral wall 3 of the inner disk 3 a continuous walled spiral chamber 6 for the reception and confinement therein of the pneumatic tube 7, which forms a cushioned support both for the hub 25* (and axle 4) and alsofor the peripheral wall 3 of disk 3, or in other words for the hub and the upper half of the wheel when attached to a vehicle or inan approximately vertical position. 4 I

It is obvious from the above description of the invention that, when the wheel is traveling either forward or backward, the outer disk 1 and inner disk 3, constituting, as has been said, practically one suspended disk, will have at times a tendency to travel either a little faster or a little slower than disk 2 which is connected through the rim of the wheel (not shown with the ground; and to prevent such difference in speed of these portions of the wheel, resulting at times in much annoyance, I attach to the inner and outer ends of the tube 7 a piece of fabric 8 which being engaged by the corresponding ends of the spiral wall 5 prevents any appreciable sliding movement of the tube on the spiral wall; and for. the same purpose I furnish the inner surface of the wall 3 of disk 3 with lugs or projections 9 which sink into the tube 7 and prevent any appreciable sliding movement of the tube on thewall 3"; and for the same purpose I furnish the tube with lugs or projections 10 which engage corresponding recesses 11 in the wall 3"; and I provide against the shock incident to any contact of the feet 5 with the walls of the openings 3 by furnishing the feet with a sleeve 12 of resilient material. Lugs 13 on the tube 7 serve to cover the openings 3. A valve for inflating the tube is indicated at 14.

The combined dust shield and chamber cover 15 may be fastened to the walls of the chamber or it may be extended beyond these walls and carried downwardly and afiixed to the middle disk 2.

If so desired, the inner and outer portions 16,v to make-those tube 1 at its inner and outer ends to overli itself.

The spiral wall is spring steel.

terial and an inner also be employed. r H n The details as to, many matters described and illustrated may be. varied as desired; for example, thespiral wallfimaybe turf nished with lugs or projections 9 and re cesses 11 for the purpose stated and other methods. than those shown may be employed for interlocking the tube and chamber walls; I The word, Spiral is herein employed broadly to include any expansible and con tractible chamberw vindingupon itself:

1. A resilient ,wheel comprising two con centric disks of diflerent diameters slidable one on the other the hub-disk .of lesser dif ameter and furnished centrally with a hub and peripherally with a wall; and the rim disk of greater diameter, annular'andjfnr nished with a spiral, Wall disposed between preferably of the hub and the isk ber. 2. A resilient wheel comprising two conperipheral wall of the hubnd --f fim ng a ther with; a spiral hami:centrici-disks of different diameters slidable one on the other: the hub-disk of lesser p p H r v diameterand furnished centrally'with ahub The tube may be made of any resilient mad tube (not shown) ma'y and peripherally with a wall; and the rimdi'sliof greater diameter, annular and furnished with a spiral wall disposedbetween the hub and the peripheral wallof the hub:- disk and forming therewith agspiral chamberjtogether with a spiral pneumatic tube disposed in said chamber;

3; Afresilient'wheeI comprising two concentric disks of different diameters slidable one on the" other and furnished with walls so disposed as to form an expansible and con tractible spiral chamber; 1

4. Aresil'ient wheel comprising twoc0ncentric .disks of different diameters slidable oneon the other and furnished with walls so disposedas to form'an expansible and contractible spiral "chamber; and a' pneumatic is tube' disposedin said chamber, 7 V

In testimony whereof. I have afixeclrmy signature. 

